Breadcrumb Home Essington 2025-2026 Catalog Dental Hygiene DH140 DH140: PERIODONTICS I Download as PDF Subject Area Dental Hygiene Quarter Credits 2 Clock Hours 24 Lecture Hours 20 Lab Hours 4 This course is designed to study the periodontium in healthy and diseased states. Areas of discussion include the tissues and microscopic anatomy of the periodontium, the etiology of periodontal disease and host response. Prerequisites DH105